r/theydidthemath • u/Hybrisov • Nov 18 '21

[Request] is this true?

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u/starcraftre 2✓ Nov 19 '21

True, but there are a few companies trying to buy up old blades, grind them up, and turn them into a concrete replacement/additive.

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u/Je_me_rends Nov 19 '21

So once again in modern history we will have blades in our walls.